Kiyoshi Hayakawa

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Yokohamashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Block copolymer mixture of conjugated diene and vinyl aromatic hydr...
- Patent number 4,423,190
- Issue date Dec 27, 1983
- Asahi Kasei Kogyo Kabushiki Kaisha
- Isaburo Fukawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing mixture of block copolymers
- Patent number 4,208,356
- Issue date Jun 17, 1980
- Asahi Kasei Kogyo Kabushiki Kaisha
- Isaburo Fukawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
High-impact polystyrene composition and production thereof
- Patent number 4,183,877
- Issue date Jan 15, 1980
- Asahi Kasei Kogyo Kabushiki Kaisha
- Toshio Ibaragi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...